Figure 6
CD images of a sample two-dimensional array of chiral (swirl shape) gold nanostructures.
(a) SEM image of a swirl-shaped gold nanostructure array. The dimensions of the individual nanostructure are 640 nm (height and width), 160 nm (line width), and 87 nm (thickness). (b) Transmission image of the sample at the observation wavelength of 700 nm. (c–h) CD images observed at wavelengths of 500, 700 and 800 nm. The sample and observation area for (d,f,h) are the same as those for (b). The handedness of the chiral nanostructures in panels (c,e,g) is reversed to that in (d,f,h).
